scsi: bnx2fc: Fix comparison to bool warning

scsi: bnx2fc: Fix comparison to bool warning

Fix the following coccicheck warning:

./drivers/scsi/bnx2fc/bnx2fc_fcoe.c:2089:5-23: WARNING: Comparison to bool
./drivers/scsi/bnx2fc/bnx2fc_fcoe.c:2187:5-23: WARNING: Comparison to bool

Link: https://lore.kernel.org/r/1604767920-8361-1-git-send-email-kaixuxia@tencent.com
Reported-by: Tosk Robot <tencent_os_robot@tencent.com>
Acked-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Kaixu Xia <kaixuxia@tencent.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>